Synthesis of an Isostere of an O-Linked Glycopeptide
作者:Lisa J. Whalen、Randall L. Halcomb
DOI:10.1021/ol0490779
日期:2004.9.1
route for the synthesis of an electrophilic, carbocyclic galactose equivalent from D-galactose is described. The strategy utilizes ring-closing metathesis with Grubbs's second-generation catalyst as the key step. The galactose-derived electrophile reacted in an S(N)2 fashion with N-Boc-cysteine methyl ester to provide an alpha-galactosylserine isostere. The method was extended to the synthesis of a glycopeptide